[806] | 1 | // |
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| 2 | // C++ Implementation: STFrequencies |
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| 3 | // |
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| 4 | // Description: |
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| 5 | // |
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| 6 | // |
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| 7 | // Author: Malte Marquarding <asap@atnf.csiro.au>, (C) 2006 |
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| 8 | // |
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| 9 | // Copyright: See COPYING file that comes with this distribution |
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| 10 | // |
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| 11 | // |
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| 12 | #include <casa/iostream.h> |
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| 13 | #include <casa/iomanip.h> |
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| 14 | #include <casa/Exceptions/Error.h> |
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| 15 | #include <casa/Containers/RecordField.h> |
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| 16 | #include <casa/Arrays/IPosition.h> |
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[2658] | 17 | #include <casa/Logging/LogIO.h> |
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[2900] | 18 | #include <casa/BasicMath/Math.h> |
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[806] | 19 | |
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| 20 | #include <tables/Tables/TableDesc.h> |
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| 21 | #include <tables/Tables/SetupNewTab.h> |
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| 22 | #include <tables/Tables/ScaColDesc.h> |
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| 23 | #include <tables/Tables/TableRecord.h> |
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| 24 | #include <tables/Tables/TableParse.h> |
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| 25 | #include <tables/Tables/TableRow.h> |
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| 26 | |
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| 27 | #include <coordinates/Coordinates/CoordinateSystem.h> |
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| 28 | #include <coordinates/Coordinates/CoordinateUtil.h> |
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| 29 | |
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| 30 | #include "STFrequencies.h" |
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| 31 | |
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| 32 | |
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| 33 | using namespace casa; |
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| 34 | |
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| 35 | namespace asap { |
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| 36 | |
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[847] | 37 | const String STFrequencies::name_ = "FREQUENCIES"; |
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[806] | 38 | |
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[849] | 39 | STFrequencies::STFrequencies(const Scantable& parent) : |
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| 40 | STSubTable(parent, name_) |
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[806] | 41 | { |
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| 42 | setup(); |
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| 43 | } |
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| 44 | |
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[1360] | 45 | STFrequencies::STFrequencies( casa::Table tab ) : |
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[856] | 46 | STSubTable(tab, name_) |
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[849] | 47 | { |
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| 48 | refpixCol_.attach(table_,"REFPIX"); |
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| 49 | refvalCol_.attach(table_,"REFVAL"); |
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| 50 | incrCol_.attach(table_,"INCREMENT"); |
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[806] | 51 | |
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[849] | 52 | } |
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| 53 | |
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[806] | 54 | STFrequencies::~STFrequencies() |
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| 55 | { |
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| 56 | } |
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| 57 | |
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[1360] | 58 | STFrequencies & STFrequencies::operator=( const STFrequencies & other ) |
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[849] | 59 | { |
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| 60 | if ( this != &other ) { |
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| 61 | static_cast<STSubTable&>(*this) = other; |
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| 62 | refpixCol_.attach(table_,"REFPIX"); |
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| 63 | refvalCol_.attach(table_,"REFVAL"); |
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| 64 | incrCol_.attach(table_,"INCREMENT"); |
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| 65 | } |
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| 66 | return *this; |
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| 67 | } |
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| 68 | |
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[806] | 69 | void STFrequencies::setup( ) |
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| 70 | { |
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| 71 | // add to base class table |
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| 72 | table_.addColumn(ScalarColumnDesc<Double>("REFPIX")); |
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| 73 | table_.addColumn(ScalarColumnDesc<Double>("REFVAL")); |
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| 74 | table_.addColumn(ScalarColumnDesc<Double>("INCREMENT")); |
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| 75 | |
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[847] | 76 | table_.rwKeywordSet().define("FRAME", String("TOPO")); |
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| 77 | table_.rwKeywordSet().define("BASEFRAME", String("TOPO")); |
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[806] | 78 | table_.rwKeywordSet().define("EQUINOX",String( "J2000")); |
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[941] | 79 | table_.rwKeywordSet().define("UNIT", String("")); |
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[806] | 80 | table_.rwKeywordSet().define("DOPPLER", String("RADIO")); |
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| 81 | |
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| 82 | // new cached columns |
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| 83 | refpixCol_.attach(table_,"REFPIX"); |
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| 84 | refvalCol_.attach(table_,"REFVAL"); |
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| 85 | incrCol_.attach(table_,"INCREMENT"); |
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| 86 | } |
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| 87 | |
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| 88 | uInt STFrequencies::addEntry( Double refpix, Double refval, Double inc ) |
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| 89 | { |
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| 90 | // test if this already exists |
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| 91 | Table result = table_( near(table_.col("REFVAL"), refval) |
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[2242] | 92 | && near(table_.col("REFPIX"), refpix) |
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| 93 | && near(table_.col("INCREMENT"), inc), 1 ); |
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[806] | 94 | uInt resultid = 0; |
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| 95 | if ( result.nrow() > 0) { |
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| 96 | ROScalarColumn<uInt> c(result, "ID"); |
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| 97 | c.get(0, resultid); |
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| 98 | |
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| 99 | } else { |
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| 100 | uInt rno = table_.nrow(); |
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| 101 | table_.addRow(); |
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| 102 | // get last assigned freq_id and increment |
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| 103 | if ( rno > 0 ) { |
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| 104 | idCol_.get(rno-1, resultid); |
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| 105 | resultid++; |
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| 106 | } |
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| 107 | refpixCol_.put(rno, refpix); |
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| 108 | refvalCol_.put(rno, refval); |
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| 109 | incrCol_.put(rno, inc); |
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| 110 | idCol_.put(rno, resultid); |
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| 111 | } |
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| 112 | return resultid; |
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| 113 | } |
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| 114 | |
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| 115 | |
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[830] | 116 | |
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| 117 | void STFrequencies::getEntry( Double& refpix, Double& refval, Double& inc, |
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| 118 | uInt id ) |
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| 119 | { |
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[2243] | 120 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[830] | 121 | if (t.nrow() == 0 ) { |
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| 122 | throw(AipsError("STFrequencies::getEntry - freqID out of range")); |
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| 123 | } |
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| 124 | ROTableRow row(t); |
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| 125 | // get first row - there should only be one matching id |
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| 126 | const TableRecord& rec = row.get(0); |
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| 127 | refpix = rec.asDouble("REFPIX"); |
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| 128 | refval = rec.asDouble("REFVAL"); |
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| 129 | inc = rec.asDouble("INCREMENT"); |
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| 130 | } |
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| 131 | |
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[1819] | 132 | void STFrequencies::setEntry( Double refpix, Double refval, Double inc, uInt id ) |
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| 133 | { |
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[2243] | 134 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[1819] | 135 | if (t.nrow() == 0 ) { |
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| 136 | throw(AipsError("STFrequencies::getEntry - freqID out of range")); |
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| 137 | } |
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| 138 | for ( uInt i = 0 ; i < table_.nrow() ; i++ ) { |
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| 139 | uInt fid ; |
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| 140 | idCol_.get( i, fid ) ; |
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| 141 | if ( fid == id ) { |
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| 142 | refpixCol_.put( i, refpix ) ; |
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| 143 | refvalCol_.put( i, refval ) ; |
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| 144 | incrCol_.put( i, inc ) ; |
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| 145 | } |
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| 146 | } |
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| 147 | } |
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| 148 | |
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[847] | 149 | SpectralCoordinate STFrequencies::getSpectralCoordinate( uInt id ) const |
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[806] | 150 | { |
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[2243] | 151 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[806] | 152 | |
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| 153 | if (t.nrow() == 0 ) { |
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[847] | 154 | throw(AipsError("STFrequencies::getSpectralCoordinate - ID out of range")); |
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[806] | 155 | } |
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| 156 | |
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| 157 | // get the data |
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| 158 | ROTableRow row(t); |
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| 159 | // get first row - there should only be one matching id |
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| 160 | const TableRecord& rec = row.get(0); |
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[847] | 161 | return SpectralCoordinate( getFrame(true), rec.asDouble("REFVAL"), |
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[806] | 162 | rec.asDouble("INCREMENT"), |
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| 163 | rec.asDouble("REFPIX")); |
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| 164 | } |
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| 165 | |
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[1819] | 166 | /** |
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[847] | 167 | SpectralCoordinate |
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[1360] | 168 | STFrequencies::getSpectralCoordinate( const MDirection& md, |
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| 169 | const MPosition& mp, |
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| 170 | const MEpoch& me, |
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| 171 | Double restfreq, uInt id ) const |
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[1819] | 172 | **/ |
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| 173 | SpectralCoordinate |
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| 174 | STFrequencies::getSpectralCoordinate( const MDirection& md, |
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| 175 | const MPosition& mp, |
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| 176 | const MEpoch& me, |
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| 177 | Vector<Double> restfreq, uInt id ) const |
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[806] | 178 | { |
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[847] | 179 | SpectralCoordinate spc = getSpectralCoordinate(id); |
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[1819] | 180 | //spc.setRestFrequency(restfreq, True); |
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| 181 | // for now just use the first rest frequency |
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| 182 | if (restfreq.nelements()==0 ) { |
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| 183 | restfreq.resize(1); |
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| 184 | restfreq[0] = 0; |
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| 185 | } |
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| 186 | spc.setRestFrequency(restfreq[0], True); |
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[847] | 187 | if ( !spc.setReferenceConversion(getFrame(), me, mp, md) ) { |
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| 188 | throw(AipsError("Couldn't convert frequency frame.")); |
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| 189 | } |
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| 190 | String unitstr = getUnitString(); |
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| 191 | if ( !unitstr.empty() ) { |
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| 192 | Unit unitu(unitstr); |
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| 193 | if ( unitu == Unit("Hz") ) { |
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[866] | 194 | Vector<String> wau(1); wau = unitu.getName(); |
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| 195 | spc.setWorldAxisUnits(wau); |
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[847] | 196 | } else { |
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| 197 | spc.setVelocity(unitstr, getDoppler()); |
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| 198 | } |
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| 199 | } |
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| 200 | return spc; |
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| 201 | } |
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| 202 | |
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| 203 | |
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| 204 | void STFrequencies::rescale( Float factor, const std::string& mode ) |
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| 205 | { |
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[806] | 206 | TableRow row(table_); |
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| 207 | TableRecord& outrec = row.record(); |
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| 208 | RecordFieldPtr<Double> rv(outrec, "REFVAL"); |
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| 209 | RecordFieldPtr<Double> rp(outrec, "REFPIX"); |
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| 210 | RecordFieldPtr<Double> inc(outrec, "INCREMENT"); |
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| 211 | for (uInt i=0; i<table_.nrow(); ++i) { |
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| 212 | |
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| 213 | const TableRecord& rec = row.get(i); |
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| 214 | |
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[847] | 215 | SpectralCoordinate sc ( getFrame(true), rec.asDouble("REFVAL"), |
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[806] | 216 | rec.asDouble("INCREMENT"), rec.asDouble("REFPIX") ); |
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| 217 | |
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| 218 | SpectralCoordinate scout; |
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| 219 | if (mode == "BIN") { |
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| 220 | scout = binCsys(sc, Int(factor)); |
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| 221 | } else if (mode == "RESAMPLE") { |
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| 222 | scout = resampleCsys(sc, factor); |
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| 223 | } |
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| 224 | *rv = scout.referenceValue()[0]; |
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| 225 | *rp = scout.referencePixel()[0]; |
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| 226 | *inc = scout.increment()[0]; |
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| 227 | row.put(i); |
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| 228 | } |
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| 229 | } |
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| 230 | |
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| 231 | SpectralCoordinate STFrequencies::binCsys(const SpectralCoordinate& sc, |
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| 232 | Int factor) |
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| 233 | { |
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| 234 | CoordinateSystem csys; |
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| 235 | csys.addCoordinate(sc); |
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| 236 | IPosition factors(1, factor); |
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| 237 | CoordinateSystem binnedcs = |
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| 238 | CoordinateUtil::makeBinnedCoordinateSystem(factors, csys, False); |
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| 239 | return binnedcs.spectralCoordinate(0); |
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| 240 | } |
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| 241 | |
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| 242 | SpectralCoordinate STFrequencies::resampleCsys(const SpectralCoordinate& sc, |
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| 243 | Float width) |
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| 244 | { |
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| 245 | Vector<Float> offset(1,0.0); |
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[1694] | 246 | Vector<Float> factors(1,width); |
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[806] | 247 | Vector<Int> newshape; |
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| 248 | CoordinateSystem csys; |
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| 249 | csys.addCoordinate(sc); |
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| 250 | CoordinateSystem csys2 = csys.subImage(offset, factors, newshape); |
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| 251 | return csys2.spectralCoordinate(0); |
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| 252 | } |
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| 253 | |
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| 254 | |
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[847] | 255 | MFrequency::Types STFrequencies::getFrame(bool base) const |
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[806] | 256 | { |
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| 257 | // get the ref frame |
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[921] | 258 | String rf; |
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| 259 | if ( base ) |
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| 260 | rf = table_.keywordSet().asString("BASEFRAME"); |
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| 261 | else |
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| 262 | rf = table_.keywordSet().asString("FRAME"); |
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[806] | 263 | |
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| 264 | // Create SpectralCoordinate (units Hz) |
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| 265 | MFrequency::Types mft; |
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| 266 | if (!MFrequency::getType(mft, rf)) { |
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| 267 | ostringstream oss; |
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[2658] | 268 | LogIO os( casa::LogOrigin( "STFrequencies", "getFrame") ); |
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| 269 | os << LogIO::WARN << "WARNING: Frequency type unknown assuming TOPO" |
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| 270 | << LogIO::POST; |
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[806] | 271 | mft = MFrequency::TOPO; |
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| 272 | } |
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| 273 | |
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| 274 | return mft; |
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| 275 | } |
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| 276 | |
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[1360] | 277 | std::string STFrequencies::getFrameString( bool base ) const |
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[847] | 278 | { |
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| 279 | if ( base ) return table_.keywordSet().asString("BASEFRAME"); |
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| 280 | else return table_.keywordSet().asString("FRAME"); |
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| 281 | } |
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| 282 | |
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[1360] | 283 | std::string STFrequencies::getUnitString( ) const |
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[847] | 284 | { |
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| 285 | return table_.keywordSet().asString("UNIT"); |
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| 286 | } |
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| 287 | |
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[1360] | 288 | Unit STFrequencies::getUnit( ) const |
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[847] | 289 | { |
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| 290 | return Unit(table_.keywordSet().asString("UNIT")); |
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| 291 | } |
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| 292 | |
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[1360] | 293 | std::string STFrequencies::getDopplerString( ) const |
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[847] | 294 | { |
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| 295 | return table_.keywordSet().asString("DOPPLER"); |
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| 296 | } |
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| 297 | |
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[1360] | 298 | MDoppler::Types STFrequencies::getDoppler( ) const |
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[847] | 299 | { |
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| 300 | String dpl = table_.keywordSet().asString("DOPPLER"); |
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| 301 | |
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| 302 | // Create SpectralCoordinate (units Hz) |
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| 303 | MDoppler::Types mdt; |
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| 304 | if (!MDoppler::getType(mdt, dpl)) { |
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| 305 | throw(AipsError("Doppler type unknown")); |
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| 306 | } |
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| 307 | return mdt; |
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| 308 | } |
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| 309 | |
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[1375] | 310 | std::string STFrequencies::print( int id, Bool strip ) const |
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[806] | 311 | { |
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| 312 | Table t; |
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| 313 | ostringstream oss; |
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| 314 | if ( id < 0 ) t = table_; |
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[2243] | 315 | else t = table_(table_.col("ID") == Int(id), 1 ); |
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[806] | 316 | ROTableRow row(t); |
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| 317 | for (uInt i=0; i<t.nrow(); ++i) { |
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| 318 | const TableRecord& rec = row.get(i); |
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| 319 | oss << setw(8) |
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[2816] | 320 | << t.keywordSet().asString("BASEFRAME") << setw(16) << setprecision(8) |
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[1375] | 321 | << rec.asDouble("REFVAL") << setw(7) |
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| 322 | << rec.asDouble("REFPIX") |
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[1694] | 323 | << setw(15) |
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[1375] | 324 | << rec.asDouble("INCREMENT"); |
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[806] | 325 | } |
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[1375] | 326 | String outstr(oss); |
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| 327 | if (strip) { |
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| 328 | int f = outstr.find_first_not_of(' '); |
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| 329 | int l = outstr.find_last_not_of(' ', outstr.size()); |
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[1694] | 330 | if (f < 0) { |
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| 331 | f = 0; |
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[1375] | 332 | } |
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[1694] | 333 | if ( l < f || l < f ) { |
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[1375] | 334 | l = outstr.size(); |
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| 335 | } |
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| 336 | return outstr.substr(f,l); |
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| 337 | } |
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| 338 | return outstr; |
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[806] | 339 | } |
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| 340 | |
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| 341 | float STFrequencies::getRefFreq( uInt id, uInt channel ) |
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| 342 | { |
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[2243] | 343 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[806] | 344 | if ( t.nrow() == 0 ) throw(AipsError("Selected Illegal frequency id")); |
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| 345 | ROTableRow row(t); |
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| 346 | const TableRecord& rec = row.get(0); |
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| 347 | return (Double(channel/2) - rec.asDouble("REFPIX")) |
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| 348 | * rec.asDouble("INCREMENT") + rec.asDouble("REFVAL"); |
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| 349 | } |
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| 350 | |
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[1360] | 351 | bool STFrequencies::conformant( const STFrequencies& other ) const |
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[840] | 352 | { |
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| 353 | const Record& r = table_.keywordSet(); |
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| 354 | const Record& ro = other.table_.keywordSet(); |
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[847] | 355 | return ( r.asString("FRAME") == ro.asString("FRAME") && |
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[840] | 356 | r.asString("EQUINOX") == ro.asString("EQUINOX") && |
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| 357 | r.asString("UNIT") == ro.asString("UNIT") && |
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| 358 | r.asString("DOPPLER") == ro.asString("DOPPLER") |
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| 359 | ); |
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| 360 | } |
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| 361 | |
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[1360] | 362 | std::vector< std::string > STFrequencies::getInfo( ) const |
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[847] | 363 | { |
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| 364 | const Record& r = table_.keywordSet(); |
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| 365 | std::vector<std::string> out; |
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| 366 | out.push_back(r.asString("UNIT")); |
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| 367 | out.push_back(r.asString("FRAME")); |
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| 368 | out.push_back(r.asString("DOPPLER")); |
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[866] | 369 | return out; |
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[847] | 370 | } |
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| 371 | |
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[1360] | 372 | void STFrequencies::setInfo( const std::vector< std::string >& theinfo ) |
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[847] | 373 | { |
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| 374 | if ( theinfo.size() != 3 ) throw(AipsError("setInfo needs three parameters")); |
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[866] | 375 | try { |
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| 376 | setUnit(theinfo[0]); |
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| 377 | setFrame(theinfo[1]); |
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| 378 | setDoppler(theinfo[2]); |
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| 379 | } catch (AipsError& e) { |
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| 380 | throw(e); |
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| 381 | } |
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| 382 | } |
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| 383 | |
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[1360] | 384 | void STFrequencies::setUnit( const std::string & unit ) |
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[866] | 385 | { |
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| 386 | if (unit == "" || unit == "pixel" || unit == "channel" ) { |
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| 387 | table_.rwKeywordSet().define("UNIT", ""); |
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[847] | 388 | } else { |
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[866] | 389 | Unit u(unit); |
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| 390 | if ( u == Unit("km/s") || u == Unit("Hz") ) |
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| 391 | table_.rwKeywordSet().define("UNIT", unit); |
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| 392 | else { |
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| 393 | throw(AipsError("Illegal spectral unit.")); |
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| 394 | } |
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[847] | 395 | } |
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| 396 | } |
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[866] | 397 | |
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[1360] | 398 | void STFrequencies::setFrame(MFrequency::Types frame, bool base ) |
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[847] | 399 | { |
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[921] | 400 | String f = MFrequency::showType(frame); |
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| 401 | if (base) |
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| 402 | table_.rwKeywordSet().define("BASEFRAME", f); |
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| 403 | else |
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| 404 | table_.rwKeywordSet().define("FRAME", f); |
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| 405 | |
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| 406 | } |
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| 407 | |
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[1360] | 408 | void STFrequencies::setFrame( const std::string & frame, bool base ) |
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[921] | 409 | { |
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[847] | 410 | MFrequency::Types mdr; |
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| 411 | if (!MFrequency::getType(mdr, frame)) { |
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| 412 | Int a,b;const uInt* c; |
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| 413 | const String* valid = MFrequency::allMyTypes(a, b, c); |
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[866] | 414 | Vector<String> ftypes(IPosition(1,a), valid); |
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| 415 | ostringstream oss; |
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| 416 | oss << String("Please specify a legal frequency type. Types are\n"); |
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| 417 | oss << ftypes; |
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| 418 | String msg(oss); |
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| 419 | throw(AipsError(msg)); |
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[847] | 420 | } else { |
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[921] | 421 | if (base) |
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| 422 | table_.rwKeywordSet().define("BASEFRAME", frame); |
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| 423 | else |
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| 424 | table_.rwKeywordSet().define("FRAME", frame); |
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[847] | 425 | } |
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| 426 | } |
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| 427 | |
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[1360] | 428 | void STFrequencies::setDoppler( const std::string & doppler ) |
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[866] | 429 | { |
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| 430 | MDoppler::Types mdt; |
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| 431 | if (!MDoppler::getType(mdt, doppler)) { |
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| 432 | Int a,b;const uInt* c; |
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| 433 | const String* valid = MDoppler::allMyTypes(a, b, c); |
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| 434 | Vector<String> ftypes(IPosition(1,a), valid); |
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| 435 | ostringstream oss; |
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| 436 | oss << String("Please specify a legal doppler type. Types are\n"); |
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| 437 | oss << ftypes; |
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| 438 | String msg(oss); |
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| 439 | throw(AipsError(msg)); |
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| 440 | } else { |
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| 441 | table_.rwKeywordSet().define("DOPPLER", doppler); |
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| 442 | } |
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| 443 | } |
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[849] | 444 | |
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[1694] | 445 | void STFrequencies::shiftRefPix(int npix, uInt id) |
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[1360] | 446 | { |
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[2243] | 447 | Table t = table_(table_.col("ID") == Int(id), 1 ); |
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[1360] | 448 | if ( t.nrow() == 0 ) throw(AipsError("Selected Illegal frequency id")); |
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| 449 | ScalarColumn<Double> tcol(t, "REFPIX"); |
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| 450 | tcol.put(0, tcol(0)+Double(npix)); |
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| 451 | } |
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[866] | 452 | |
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[2900] | 453 | bool STFrequencies::match( Double refpix, Double refval, |
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| 454 | Double inc, Double freqTolInHz, |
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| 455 | uInt &id) |
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| 456 | { |
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| 457 | ROScalarColumn<uInt> idCol(table_, "ID"); |
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| 458 | ROScalarColumn<Double> refPixCol(table_, "REFPIX"); |
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| 459 | ROScalarColumn<Double> refValCol(table_, "REFVAL"); |
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| 460 | ROScalarColumn<Double> incCol(table_, "INCREMENT"); |
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| 461 | for (uInt irow = 0; irow < table_.nrow(); ++irow) { |
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| 462 | Double refInc = incCol(irow); |
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| 463 | Double refFreq = refValCol(irow) - refPixCol(irow) * refInc; |
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| 464 | Double freq0 = refval - refpix * inc; |
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| 465 | if (nearAbs(inc, refInc, freqTolInHz) && |
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| 466 | nearAbs(refFreq, freq0, freqTolInHz)) { |
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| 467 | id = irow; |
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| 468 | return true; |
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| 469 | } |
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| 470 | } |
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| 471 | return false; |
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| 472 | } |
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| 473 | |
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[806] | 474 | } // namespace |
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